Digital Conductivity TDS Meter 641

Digital Conductivity TDS Meter 641

Digital Conductivity/TDS Meter 641: Professional Water Analysis Solution

The Digital Conductivity/TDS Meter 641 is a high-precision instrument designed for fast and accurate determination of Total Dissolved Solids (TDS) in liquids. Built with solid-state technology and integrated circuit components, this versatile device delivers reliable measurements for drinking water, wastewater, brine solutions, sea water, and various industrial applications.

Key Features & Benefits Digital Conductivity TDS Meter 641

• Exceptional Measurement Range - Multiple TDS ranges from 0-200 ppm to 0-1000 ppt (1 million ppm)
• Comprehensive Conductivity Measurement - Wide range coverage from 200 μS to 2000 mS
• High Accuracy - Precision of 1% FS ±1 digit ensures reliable results
• Temperature Compensation - Automatic adjustment from 0-50°C for consistent readings
• Adjustable Cell Constant - Customizable settings with digital display indication
• Premium Platinum Sensor - DIP-type conductivity/TDS cell for optimal performance
• Clear Digital Display - 3½ digit seven-segment LED display for easy reading
• Fine Resolution - 0.1 ppm resolution for detecting small concentration changes
• Durable Construction - Robust design for laboratory environments
• Complete Package - Includes conductivity/TDS cell, operation manual, and dust cover

Technical Specifications Digital Conductivity TDS Meter 641

Specification	Details
TDS Range	0-200 ppm, 0-2 ppt, 0-20.00 ppt (20,000 ppm), 0-200 ppt (200,000 ppm), 0-1000 ppt (1 million ppm)
Conductivity Range	200 μS, 2 mS, 20 mS, 200 mS, 2000 mS
Resolution	0.1 ppm
Accuracy	1% FS ±1 digit
Cell Constant	Adjustable with indication on digital display
Temperature Compensation	0 to 50°C
Sensor Type	Platinum DIP Type Conductivity/TDS Cell
Display	3½ Digit Seven Segment LED Display
Power Requirements	230V±10% AC, 50Hz
Dimensions	275 x 175 x 75 mm (L x B x H) (Approx.)
Weight	2 Kg (Approx.)
Included Accessories	Conductivity/TDS Cell, Operation Manual, Dust Cover

Applications & Industries Digital Conductivity TDS Meter 641

Environmental Monitoring Digital Conductivity TDS Meter 641

• Drinking Water Quality - Verify safety and regulatory compliance of potable water
• Surface Water Analysis - Monitor rivers, lakes, and reservoirs for environmental health
• Groundwater Assessment - Test well water and aquifer quality
• Wastewater Treatment - Track treatment efficiency and effluent quality
• Environmental Impact Studies - Assess water quality for ecological research

Industrial Applications Digital Conductivity TDS Meter 641

• Process Water Monitoring - Ensure water quality for manufacturing processes
• Cooling Tower Management - Control dissolved solids in cooling systems
• Boiler Water Testing - Prevent scaling and corrosion in steam systems
• Desalination Plants - Monitor input and output water quality
• Chemical Processing - Quality control for water-based solutions

Agricultural Use Digital Conductivity TDS Meter 641

• Irrigation Water Analysis - Ensure appropriate salinity levels for crop health
• Hydroponics - Monitor nutrient solutions for optimal plant growth
• Aquaculture - Maintain appropriate water conditions for aquatic species
• Soil Extract Testing - Analyze soluble salts in soil samples
• Agricultural Research - Support studies on water quality effects on crops

Additional Applications

• Academic Laboratories - Support educational demonstrations and research
• Municipal Water Treatment - Verify treatment effectiveness
• Seawater Analysis - Measure salinity in marine environments
• Brine Solutions - Control concentration in industrial processes
• Food and Beverage Production - Ensure appropriate water quality

Understanding TDS Measurement Digital Conductivity TDS Meter 641

Importance of TDS in Water Analysis

Total Dissolved Solids (TDS) is a critical water quality parameter that measures the combined content of all inorganic and organic substances in a liquid. High TDS levels can significantly impact water quality and usability:

• Drinking Water Impact - Influences taste, appearance, and potability
• Environmental Effects - Affects osmo-regulation of freshwater organisms
• Agricultural Consequences - Determines suitability for irrigation
• Industrial Implications - Impacts equipment efficiency and product quality
• Water Utility - Reduces gas solubility and overall water usefulness

Relationship Between Conductivity and TDS Digital Conductivity TDS Meter 641

The Digital Conductivity/TDS Meter 641 measures electrical conductivity and converts it to TDS values:

• Direct Correlation - Conductivity increases with dissolved ion concentration
• Conversion Factors - Standard conversion ratios between conductivity and TDS
• Calibration Importance - Adjustable cell constant allows for accurate conversions
• Temperature Effects - Automatic compensation adjusts for temperature influence
• Application-Specific Considerations - Different water types may require different calibration approaches

Product Advantages Digital Conductivity TDS Meter 641

Advanced Measurement Technology

The Digital Conductivity/TDS Meter 641 incorporates several technological advantages:

• Solid-State Components - Reliable performance with minimal maintenance
• Integrated Circuit Design - Precise signal processing for accurate readings
• Platinum Sensor Technology - Premium electrode material for consistent performance
• Extended Measurement Range - Covers applications from ultra-pure water to highly concentrated solutions
• High Resolution - Detects minute changes in TDS concentration

User-Friendly Design Digital Conductivity TDS Meter 641

The instrument features practical design elements that enhance usability:

• Clear LED Display - High-visibility readout for laboratory environments
• Intuitive Controls - Straightforward operation for technical and non-technical users
• Compact Footprint - Efficient use of laboratory bench space
• Durable Construction - Built to withstand regular laboratory use
• Included Dust Cover - Protects instrument when not in use

Operational Guidelines

Basic Measurement Procedure Digital Conductivity TDS Meter 641

1. Connect the conductivity/TDS cell to the meter
2. Select the appropriate measurement range based on expected concentration
3. Calibrate the instrument using standard solutions if needed
4. Rinse the electrode with distilled water
5. Immerse the electrode in the sample solution
6. Allow reading to stabilize
7. Record the measurement value
8. Rinse electrode thoroughly between samples

Maintenance Recommendations Digital Conductivity TDS Meter 641

• Regular Calibration - Verify accuracy using standard solutions
• Electrode Care - Clean electrode after each use to prevent contamination
• Periodic Inspection - Check electrode for signs of damage or wear
• Proper Storage - Keep electrode in appropriate storage solution when not in use
• Temperature Consideration - Allow samples to reach ambient temperature for most accurate results

Common TDS Ranges for Different Water Types

Water Type	Typical TDS Range	Classification
Distilled Water	0-10 ppm	Ultra-pure
Rainwater	5-50 ppm	Very pure
Freshwater Streams/Rivers	50-250 ppm	Good quality freshwater
Drinking Water (acceptable)	< 500 ppm	Potable
Brackish Water	1,000-15,000 ppm	Moderately saline
Seawater	30,000-40,000 ppm	Highly saline
Brine Solutions	100,000-300,000+ ppm	Industrial concentration

Summary Digital Conductivity TDS Meter 641

The Digital Conductivity/TDS Meter 641 represents an essential instrument for professionals requiring accurate and reliable measurement of dissolved solids in water and other liquids. Its wide measurement range, high accuracy, and temperature compensation capabilities make it suitable for diverse applications across environmental monitoring, industrial processes, agriculture, and research. Key features include the comprehensive TDS range from 0-200 ppm to 0-1000 ppt (1 million ppm), conductivity measurement from 200 μS to 2000 mS, platinum DIP-type sensor, and adjustable cell constant. The instrument's solid-state technology and integrated circuit design ensure consistent performance and durability in laboratory environments. With its ability to provide precise TDS measurements, this meter serves as a critical tool for assessing water quality for drinking, irrigation, industrial processes, and environmental monitoring. The included accessories and user-friendly design make it ready for immediate implementation in your testing protocols. For organizations concerned with water quality assessment, process control, or regulatory compliance, the Digital Conductivity/TDS Meter 641 delivers the accuracy, range, and reliability required for professional water analysis applications.